[1]JIA Lu,RUAN Xinxin,LIU Zhangjun.Dimension Reduction Simulation for Near-field Fault Pulse-like Ground Motion[J].Journal of Seismological Research,2019,42(04):516-522.
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Dimension Reduction Simulation for Near-field Fault Pulse-like Ground Motion
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 04
Page number:
516-522
Column:
Public date:
2019-12-15
- Title:
- Dimension Reduction Simulation for Near-field Fault Pulse-like Ground Motion
- Keywords:
- pulse-like ground motion; velocity pulse; high-frequency acceleration; random process; dimension reduction simulation
- CLC:
- P315.914
- DOI:
- -
- Abstract:
- A dimension reduction method for the simulation of near-field fault pulse-like ground motions is proposed.The near-field fault pulse-like ground motions are decomposed into two parts,including high-frequency component and low-frequency component.The spectral representation-random function method is used to generate the time-series of high-frequency acceleration,which is then converted to the corresponding velocity time-series.The Gabor wavelet is used to simulate the time-series of low-frequency velocity pulse.And the time-series of high and low frequency velocity are superposed to get the synthetic velocity time-series of ground motion,which are then transformed to obtain the acceleration,displacement time-series of near-field fault pulse-like ground motion.The calculating example shows that the time-series simulated by this method with only three basic random variables can reflect the characteristics of the near-fault pulse-like ground motion,such as directivity effect and large velocity pulse,and thus can provide reasonable input for the random seismic respond and aseismic reliability analysis of engineering structures in the near-field fault region.
- References:
- -
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Last Update:
2019-12-15